Disk cap for milk bottles



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Oct. 1, 1929. RAYNER 1,730,292

DISK CAP FOR MILK BOTTLES Filed Aug. 22, 1927 45 towards the observer.

Patented Oct. 1, 1929 ANNE K. RAYNER, or rIQUA, OHIO DISK GAP m MILK BOTTLES Application filed. August 22, 1927. Serial No. 214,641.

' 5 is believed a disk cap results which has no p r jecting tab or the like, and which may be readily fed through the tubes of the ordinary capping machines for milk bottles, the tab being formed in and of the material of the disk.

In the accompanying drawings Figs. 1, 2 and 3 represent top and bottom face views of the preferred form of this invention. Figs. 4, 5 and 6 illustrate upper and lower face views of a disk cap showing a modified form of this invention. Figs. 7, 8 and 9 exhibit top and bottom faces of a disk showing another modified form of this invention. Fig. 10 shows the neck and mouth of a milk bottle in section with this invention as set out in Fig. 1 applied thereto. Figs. 11 and 12 show top and bottom faces of another modified form of this invention.

Throughout the drawings and description the same number is used to refer to the same part.

Considering Figs. 1, 2 and 3, the disk 1 has in its top or upper surface the scored lines 2, 3 and 4, cut partly through the material of the disk, and it will be observed that those lines of scoring form an indirect but continuous line from a point on the edge of the disk to another point on the edge separated from the first point. In Figs. 1 and 2 it will be noted that the curving lines 3 and 4 converge to form the outline of a tab, and theedge of the tab marked 5 is turned downwardly and inwardly resulting in a slight depression in the surface of the disk lying between the reference numbers 2 and 5 in Fig. 2. Fig. 3 shows the bottom or reverse side or face of the disk,

this being the face which lies towardsthe interior of the milk bottle. This View represents the disk as set forth in Figs. 1 and 2 turned over by moving the upper edge of the disk It will be noted that while the scored lines 6, 7 and 8 have the same substantial form as the scored lines in the upper surface, the sum of the scored lines 6, 7 and 8 is less in length than the sum of the scored lines 2, 3 and 4.

Considering Figs. 4, 5 and 6, on the top face shown in Figs. 4 and 5 the disk 9 has the short radial scored line 10, joined to like scored lines 11, 12 and 13 outlining a tab, and cont-inuing in the scored line 14 on the same radius as line 10 and terminating substantially at the center of the disk. In Fig. 5 the tip or end of the tab 16 is turned down and in as bev fore explained leaving the depression in the surface of the disk. The bottom or reverse of disk 9 shows the radial lines 15 and 17 forming a right angle, and extending from one point on the edge of the disk to another point of its edge separated from the first point. I

Considering Figs. 7, 8 and 9, the disk 18 has the top of the disk scored by continuous but indirect lines 19, 20, 21 and and 22, eX- tending from one point on the edge of the disk to another point of its edge separated from the first point. A. tab is outlined by the scoring as before, and its tip 23 is turned down and in as previously described. The reverse of the disk'18 as illustrated in Fig. 9 bears the scored lines 24,25 and 26, following the shape of the tab on the under side of the disk. The sum of the lengths of those lines is less than the sum of lines 19, 20, 21 and 22 on the upper face of the disk 18.

Considering Fig. 10 it will be noted that the edge 5 of the tab has been raised, and such action will tear apart the narrow portions of the material lying between the scored lines 6, 7 and 8 on the under side of the disk 1 as shown in Fig. 3, and the scored lines 2, 3 and 4 marked in broken lines on the same Fig. 3. The turned in and rounded end or tip of the tab is best illustrated in Fig. 10.

Considering Figs. 11 and 12, the top of the disk 27 has the scored lines 29, 30, 31 and 32, and these lines outline a tab, the end or tip 33 of which is turned down and in as set out in Fig. 10. The reverse of the disk 27, as shown in F ig. 12, has the scored lines 34, 35 and 36, formingvan indirect line extending from-one point on the edge of the disk to another point of the edge separated from the first point. The longitudinal sum of scored lines 34, 35 and 36 is more than that of the lines 29, 30, 31 and 32, but onlyvery slightly more in this particular modification.

In connection with the explanation of the operation of this invention, consider Fig. 10. The disk 1 when the tab is raised by inserting the finger nail, or any convenient implement, under the rounded end 5, assumes an angular position in the mouth of bottle 37, and an opening 38 is formed in the disk by the tearing of the material between the upper and lower scored lines. If the cap is held by air pressure due to the fact that the bottle was filled with chilled milk and a little air, the air enters by opening 38, and disk 1 is readily removed; The advantage of the rounded end 5 of the tab is believed to be manifest. It is formed by suitable machinery, and the depression enables the user to insert the finger nail under the end of the tab and readily raise it. The material of the disk offers but little resistance to the tearing operation, and the portions adapted to be torn are very small in extent as illustrated.

When the modification shown in Figs. 4, 5

and 6 is operated by raising the tab, the disk is torn along the line 17 shown in Fig. 6 and that portion of the disk between lines and 17 is turned upward on the scored line 15 as a hinge.

The operation of the disk as modified in Figs. 7, 8 and 9 is very closely the same as that explained for the disk 1. The same statement of operation may be made regarding the modification of this invention set out in Figs. 11 and 12.

It is found by trial that while this invention in the form shown in Fig. 1, and if operated as illustrated in Fig. 10, is easily re moved and is bent as a whole at an angle during the removal, it can be readily replaced in the mouth of the bottle, and will effectively seal the same as before.

Having now described this invention, and explained the manner of its use, what I claim 1S 1. A disk cap having in both faces scored lines cut partly through the material of the disk, the said scoring on one face converging to outline a tab, and the end portion of the on one face extending from a point'on the edge of the disk to another point of the edge separated from the first point, the scoring in the face of the disk under the tab being separated from the said scoring outlining the tab by portions of the material adapted to be torn apart when the tab is raised to form an opening through the tab, and whereby the cap is bent angularly upward as a whole in the mouth of the bottle.

4. A disk cap having a scored upper surface, the scoring outlining a tab' within the circular area of the disk and extending ahout the sides and end of the tab, and the material of the disk at the end of the tab being turned under making a rounded end and leaving a depression at the end of the tab.

5. A disk cap having a scored upper sur face, the scoring outling a tab within the circular area of the disk and extending about the sides and end of the tab, the material of the disk at the end of the tab being turned under making a rounded end and leaving a depression at the end of the tab, and the said disk being scored on the under face below the said scored tab whereby when the tab is raised an opening is formed through the disk.

In testimony whereof I affix my signature.

ANNE K. RAYNER.

tab being turned under whereby a depression is left in the .surface of the disk, the line scoring on one face extending from one point on the edge of the disk to another point of the edge separated from the first point, whereby a pull upon the tab bends the cap angularly upward as a whole in the mouth of a bottle.

2. A disk cap having in both faces scored lines cut partly through the material of the disk and of substantially similar form, the said scoring on one face converging to outline a tab, and the end portion of the tab being turned under whereby a depression is left in the surface of the disk, the line scoring on one face extending from a point 

